He ________ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it.
#62950
A
wouldn’t
B
shouldn’t
C
couldn’t
D
mustn’t
推荐题目
—Excuse me，but I haven’t got the iPhone 4 ordered through the Internet． —Sorry madam,I’m sure you have it by this Friday．
#63588
A
must
B
may
C
could
D
shall
--The man in a black suit _______ be our youth worker.--- I’m sure it _______ be him. I saw him in the laboratory building some minutes ago.
#75725
A
must; can’t
B
can; mustn’t
C
can; could
D
must; won’t
– Must I clean up the classroom right now, Miss Green?-- No, you ______.
#75722
A
mustn’t
B
can’t
C
needn’t
D
may not
— Who’s that man in our classroom? It ________ be Mr. Brown. He is much taller.— You mean the man in white? He is an exchange student from England.
#75729
A
can
B
may
C
can’t
D
mustn’t
— I missed the earliest flight in the morning. It was really a pity. —You _________ to the airport by taxi instead of by bus.
#62664
A
should go
B
should have left
C
should leave
D
must have gone